CVE-2021-4203

 

Published at: - 25-03-2022 08:15

Last modified: - 12-01-2023 08:33

Total changes: - 12

Description

A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H

 

Verification logic

 

Reference

• https://lore.kernel.org/netdev/20210929225750.2548112-1-eric.dumazet@gmail.com/T/
• https://bugs.chromium.org/p/project-zero/issues/detail?id=2230&can=7&q=modified-after%3Atoday-30&sort=-modified&colspec=ID%20Type%20Status%20Priority%20Milestone%20Owner%20Summary%20Modified%20Cve&cells=tiles&redir=1
• https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=35306eb23814
• https://bugzilla.redhat.com/show_bug.cgi?id=2036934
• N/A-Patch, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20221111-0003/

 

Keywords

NVD

 

CVE-2021-4203

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures